BROWSE

Related Researcher

Author

Shin, Hyeon Suk
Lab for Nanomaterials and Nanoanalysis(LNN)
Research Interests
  • Two-dimensional materials, graphene, transition metal dichalcogenides, h-BN, heterostructure

ITEM VIEW & DOWNLOAD

Spatially resolved spontaneous reactivity of diazonium salt on edge and basal plane of graphene without surfactant and its doping effect

Cited 0 times inthomson ciCited 28 times inthomson ci
Title
Spatially resolved spontaneous reactivity of diazonium salt on edge and basal plane of graphene without surfactant and its doping effect
Author
Lim, HyunseobLee, Ji SookShin, Hyun-JoonShin, Hyeon SukChoi, Hee Cheul
Keywords
4-bromobenzene; Basal planes; Bonding character; Carrier induced; Charge transfer phenomena; Chemical doping effects; Covalently bonded; Diazonium salts; Doping effects; Electronic device; Functionalizations; Functionalized; Potential applications; Raman spectra; Spatially resolved; Spectroscopic elucidation; Tetrafluoroborates
Issue Date
201007
Publisher
AMER CHEMICAL SOC
Citation
LANGMUIR, v.26, no.14, pp.12278 - 12284
Abstract
The site-dependent and spontaneous functionalization of 4-bromobenzene diazonium tetralluoroborate (4-BBDT) and its doping effect on a mechanically exfoliated graphene (MEG) were investigated. The spatially resolved Raman spectra obtained from both edge and basal region of MEG revealed that 4-BBDT molecules were noncovalently functionalized on the basal region of MEG, while they were covalently bonded to the edge of MEG. The chemical doping effect induced by noncovalently functionalized 4-BBDT molecules on a basal plane region of MEG was successfully explicated by Raman spectroscopy. The position of Fermi level of MEG and the type of doping charge carrier induced by the noncovalently adsorbed 4-BBDT molecules were determined from systematic G band and 2D band changes. The successful spectroscopic elucidation of the different bonding characters of 4-BBDT depending on the site of graphene is beneficial for the fundamental studies about the charge transfer phenomena of graphene as well as for the potential applications, such as electronic devices, hybridized composite structures, etc.
URI
Go to Link
DOI
http://dx.doi.org/10.1021/la101254k
ISSN
0743-7463
Appears in Collections:
SNS_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qr_code

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU